Pavel Shevaev <pacha.shevaev@xxxxxxxxx> writes: >> Those tools >> first preprocess the C source code and then compile it. It's true >> that if you are preprocessing, you need to use the -fpch-preprocess >> option. However, -fpch-preprocess is not required if you do not >> preprocess, and omitting it should work fine when using gcc proper >> rathre than ccache or distcc. > > Thanks for the explanation! I just wonder why not putting this info on > the pch help page somewhere? It's kind of special purpose and I think it would fit better on http://gcc.gnu.org/wiki/FAQ . Want to add an entry? Ian